he's communicating with law enforcement by writing. by -- i don't know how he's doing it. >> rose: or nodding in some way? >> he's communicate with them. not an ideal circumstance, but that's what he's doing. >> rose: do we know whether it's a cooperative way or not? >> it seems to be cooperative. but, again, i don't have any inside information. we don't know as much as we know. and the older brother really got radicalized in a hurry. >> rose: by a trip back to -- >> no, not -- by the time he made his trip back he was already deeply involved in this. >> rose: so why did he go back? >> well, according to the parents, according to the parents he had to go back in order to renew his passport and he went back for six months. right now we are at the stage where we don't know his exact whereabouts except for that the parents say that the older brother, tamerlan, stayed with them in dagestan, in the capital city and the father claims-- although the father and mother seem wounded and deluded to say the least about their sons' activities-- say